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Electric excitation biconvex pole dual speed wind power generator system and control method thereof

An electrical excitation doubly salient pole and wind power generator technology is applied in the fields of motor control and wind power generation, which can solve the problems of inability to adopt a double-speed pole changing structure and obtain maximum efficiency, and achieve good practicability and feasibility and high power generation efficiency. , The effect of good fault tolerance function

Inactive Publication Date: 2009-06-17
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

[0003] Fixed-pitch and stall-type electrically excited double salient pole wind power generation systems also have the problem of low speed efficiency, but the structure of electrically excited double salient pole generators is very different from that of asynchronous generators. efficiency

Method used

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  • Electric excitation biconvex pole dual speed wind power generator system and control method thereof
  • Electric excitation biconvex pole dual speed wind power generator system and control method thereof
  • Electric excitation biconvex pole dual speed wind power generator system and control method thereof

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Embodiment Construction

[0017] Such as figure 1 shown. The electric excitation double salient pole double speed wind power generator system of the present invention is characterized in that the system is provided with a wind turbine, a rotational speed sensor, a first electric excitation double salient pole motor, a second electric excitation double salient pole motor and The bridge rectifier also includes excitation circuit, first excitation winding, second excitation winding, wind wheel speed detection circuit, main control unit, drive circuit, voltage regulator main circuit, comprehensive protection circuit, sampling conditioning circuit, excitation power supply, voltage Sensor, current sensor, output voltage detection circuit and output current detection circuit; wherein the wind turbine, the first electrically excited double salient motor and the second electrically excited double salient motor are coaxially installed, and the wind turbine and the first electrically excited double salient motor ...

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Abstract

The invention discloses an electrical excitation doubly salient two-speed wind-driven generator system and a control method thereof, wherein the system is provided with a wind turbine, a rotary speed sensor, a first electrical excitation doubly salient generator, a second electrical excitation doubly salient generator and a bridge rectifier from left to right in turn, and further comprises an excitation circuit, a first excitation winding, a second excitation winding, a wind turbine rotary speed detecting circuit, a main control unit, a driving circuit, a compressor governor main circuit, a comprehensive protection circuit, a sampling conditioning circuit, an excitation power supply, a voltage sensor, a current sensor, an output voltage detecting circuit and an output current detecting circuit. The control method of the invention comprises two working modes, and can convert the working modes through feeding back the rotary speed. The invention has simple structure, convenient control, excellent practicability and feasibility.

Description

technical field [0001] The invention relates to an electrically excited double salient pole double-speed wind power generator system and a control method thereof, which belong to the field of wind power generation and the field of special motor control. Background technique [0002] Wind energy is a pollution-free, renewable green energy. The development of wind energy and the vigorous development of wind power generation are of great significance to solving the global energy crisis and environmental crisis, and have become a hot topic of research by scholars from all over the world. In recent decades, wind power generation technology has developed rapidly. Many advanced technologies such as variable pitch control, variable speed and constant frequency power generation, and direct drive without gearbox have been widely used in the field from the laboratory. At present, the mainstream fixed-pitch and stall-type wind power generation systems at home and abroad mostly use asyn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P9/14
Inventor 张乐周波朱德明张永帅程方舜
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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